Here is a Lego staircase. How many steps? How many bricks?
![A set of up and down steps made from 2 by 2 lego bricks: the base is 4 white bricks, and on top is 3 blue bricks, 2 red bricks and one yellow brick](https://alisonkiddle.co.uk/wp-content/uploads/2023/08/Lego14-1024x819.jpg)
Make some staircases of your own. How many bricks do you need?
Consulting mathematician
Here is a Lego staircase. How many steps? How many bricks?
Make some staircases of your own. How many bricks do you need?